pi-4QPSK

说明：  QPSK调制仿真与分析，使用matlab仿真实现QPSK相干调制与解调，通过AWGN信道，画出误比特率曲线(Generate digital baseband signal, add AWGN Gaussian white noise to transmit in the channel, detect the original baseband signal, draw theoretical and simulation error rate curve, QPSK modulation simulation and analysis, use matlab simulation to realize QPSK coherent modulation and demodulation, draw error rate curve through AWGN channel)

用C#实现ModBus读写功能，用作客户端读写ModBus-TCP server数据(Modbus read and write functions in C#)

this describe the rouring protocol direct diffusion for wireless sensor network

一个C++的简单的原代码,可以提供学习比较好,大家可以下了(C of a simple code, can provide a better learning, we can go down)

OFDM及其基带FFT实现原理以及OFDM的载波和符号同步问题(and OFDM baseband FFT principle and the carrier OFDM symbols and Synchronization)

说明：  OFDM信号的循环谱密度，非常详细，根据协议编的，外面非常少见！(OFDM signals in cyclic spectrum density, very detailed, made under the agreement, the outside is very rare!)

实现电力线通信信道建模及其基于OFDM调制系统环境下仿真。(Power line communication channel modeling and simulation of OFDM system)

对语音编码技术的特点进行了分析与研究, 对波形编码,声码器和混合编码三种主要 的语音编码进行了比较, 并介绍了GSM 和CD(This paper analyzes and studies the characteristics of speech coding technology, compares the three main speech codes: waveform coding, vocoder and hybrid coding, and introduces GSM and CD.)

基于EMD分解的去噪算法以及HHT变换的各种用途(EMD decomposition based on denoising algorithm and HHT transform for a variety of purposes)

二进制格雷码与自然二进制码的互换 它就是介绍怎么把二进制格雷码与自然二进制码的互换。主要是异或操作(itis to for 2to 2)